AT418193T - A method and apparatus for determining channel state information which from a first to be transmitted to a second telecommunication device - Google Patents

A method and apparatus for determining channel state information which from a first to be transmitted to a second telecommunication device

Info

Publication number
AT418193T
AT418193T AT06291044T AT06291044T AT418193T AT 418193 T AT418193 T AT 418193T AT 06291044 T AT06291044 T AT 06291044T AT 06291044 T AT06291044 T AT 06291044T AT 418193 T AT418193 T AT 418193T
Authority
AT
Austria
Prior art keywords
transmitted
apparatus
method
state information
channel state
Prior art date
Application number
AT06291044T
Other languages
German (de)
Inventor
Yoshitaka Hara
Original Assignee
Mitsubishi Electric Inf Tech
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Inf Tech, Mitsubishi Electric Corp filed Critical Mitsubishi Electric Inf Tech
Priority to EP20060291044 priority Critical patent/EP1871023B1/en
Publication of AT418193T publication Critical patent/AT418193T/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0417Feedback systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621Feedback content
    • H04B7/0626Channel coefficients, e.g. channel state information [CSI]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026Transmission of channel quality indication
AT06291044T 2006-06-23 2006-06-23 A method and apparatus for determining channel state information which from a first to be transmitted to a second telecommunication device AT418193T (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20060291044 EP1871023B1 (en) 2006-06-23 2006-06-23 Method and device for controlling channel state information transferred by a first telecommunication device to a second telecommunication device

Publications (1)

Publication Number Publication Date
AT418193T true AT418193T (en) 2009-01-15

Family

ID=36782272

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06291044T AT418193T (en) 2006-06-23 2006-06-23 A method and apparatus for determining channel state information which from a first to be transmitted to a second telecommunication device

Country Status (5)

Country Link
US (2) US20070297576A1 (en)
EP (1) EP1871023B1 (en)
JP (2) JP2008005506A (en)
AT (1) AT418193T (en)
DE (1) DE602006004328D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ581931A (en) * 2007-07-06 2012-11-30 Ericsson Telefon Ab L M Reporting channel quality information in a format adaptable to antenna configuration
CN101557246B (en) * 2008-04-07 2012-10-03 中国移动通信集团公司 Uplink power control method and device
US8867380B2 (en) * 2009-02-02 2014-10-21 Qualcomm Incorporated Scheduling algorithms for cooperative beamforming
US8867493B2 (en) 2009-02-02 2014-10-21 Qualcomm Incorporated Scheduling algorithms for cooperative beamforming based on resource quality indication

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100689398B1 (en) * 1999-10-09 2007-03-08 삼성전자주식회사 Method and apparatus for controling transmit antenna diversity of mobile communication system
US6473467B1 (en) * 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6785341B2 (en) * 2001-05-11 2004-08-31 Qualcomm Incorporated Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
US7174178B2 (en) * 2001-07-19 2007-02-06 Intel Corporation Deriving a more accurate estimate from prediction data in closed loop transmit diversity modes
US6862271B2 (en) * 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
GB0212165D0 (en) * 2002-05-27 2002-07-03 Nokia Corp A wireless system
JP3512783B1 (en) * 2002-10-08 2004-03-31 松下電器産業株式会社 Communication terminal apparatus and base station apparatus
US20040081131A1 (en) * 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
JP4256158B2 (en) * 2002-12-26 2009-04-22 パナソニック株式会社 The wireless communication device and wireless communication method
KR100571806B1 (en) * 2003-02-11 2006-04-17 삼성전자주식회사 Method for reducing feedback channel state information within adaptive OFDMA system and OFDMA system using the same
EP1460789B1 (en) * 2003-03-21 2008-08-20 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for link adaptation
BRPI0413356A (en) * 2003-08-06 2006-10-10 Matsushita Electric Ind Co Ltd wireless communication device and wireless communication method
US7599698B2 (en) * 2003-12-29 2009-10-06 Telefonaktiebolaget Lm Ericsson (Publ) Network controlled channel information reporting
US8249518B2 (en) * 2003-12-29 2012-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Network controlled feedback for MIMO systems
SE0400370D0 (en) * 2004-02-13 2004-02-13 Ericsson Telefon Ab L M Adaptive MIMO architecture
US7310499B2 (en) * 2004-02-17 2007-12-18 Telefonktiebolaget Lm Ericsson (Publ) Method, apparatus and system for handling unreliable feedback information in a wireless network
US7782987B2 (en) * 2004-03-12 2010-08-24 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for received signal quality estimation
JP2005277570A (en) * 2004-03-23 2005-10-06 Fujitsu Ltd Transmitter, receiver, and retransmission control method
US7564814B2 (en) * 2004-05-07 2009-07-21 Qualcomm, Incorporated Transmission mode and rate selection for a wireless communication system
US8385910B2 (en) * 2004-05-20 2013-02-26 Qualcomm Incorporated Systems and methods for testing signal processing control
US7522555B2 (en) * 2005-01-21 2009-04-21 Intel Corporation Techniques to manage channel prediction
KR101208520B1 (en) * 2005-03-12 2012-12-05 엘지전자 주식회사 Feedback information communication method
US7492752B2 (en) * 2005-05-25 2009-02-17 Motorola, Inc. Method and apparatus for improved channel maintenance signaling
US7965789B2 (en) * 2005-08-22 2011-06-21 Qualcomm Incorporated Reverse link power control for an OFDMA system
KR100913856B1 (en) * 2006-04-19 2009-08-26 삼성전자주식회사 Apparatus and method of channel selection in a multiple user mimo system and system thereof
WO2007132313A2 (en) * 2006-05-12 2007-11-22 Nokia Corporation Feedback frame structure for subspace tracking precoding

Also Published As

Publication number Publication date
JP2008005506A (en) 2008-01-10
JP2011188499A (en) 2011-09-22
US20100279699A1 (en) 2010-11-04
DE602006004328D1 (en) 2009-01-29
EP1871023B1 (en) 2008-12-17
EP1871023A1 (en) 2007-12-26
US20070297576A1 (en) 2007-12-27

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Legal Events

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